Electromagnetic Waves
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PHXI15:WAVES

358951 When light propagates through a material medium of relative permittivity \(\epsilon_{\mathrm{r}}\) and relative permeability \(\mu_{r}\), the velocity of light, \(v\) is given by: (c-velocity of light in vacuum)

1 \(v = {\rm{ }}\sqrt {\frac{{{\mu _r}}}{{{ \in _r}}}} \)
2 \(v = \sqrt {\frac{{{ \in _r}}}{{{\mu _r}}}} \)
3 \(v = \frac{c}{{\sqrt {{ \in _r}{\mu _r}} }}\)
4 \(v = c\)
NEET - 2022
PHXI15:WAVES

358952 A radio wave of frequency \(90\,MHz(FM)\) enters a ferrite rod. If \(\varepsilon_{\mathrm{r}}=10^{3}\) and \(\mu_{\mathrm{r}}=10\) then the velocity and wavelength of radio wave in ferrite are

1 \(3 \times {10^6}\;\,m{s^{ - 1}},3.33 \times {10^{ - 2}}\;\,m\)
2 \(3 \times {10^6}\;m{s^{ - 1}},3.33 \times {10^{ - 3}}\;m\)
3 \(3 \times {10^6}\;m{s^{ - 1}},3.33 \times {10^{ - 1}}\;m\)
4 None of these
PHXI15:WAVES

358953 Which of the following statement is false for the properties of electromagnetic waves?

1 The energy in electromagnetic wave is divided equally between electric and magnetic vectors.
2 These waves do not require any material medium for propagation.
3 Both electric and magnetic field vectors are parallel to each other and perpendicular to the direction of propagation of wave.
4 Both electric and magnetic field vectors attain the maxima and minima at the same place and same time.
PHXI15:WAVES

358954 The electric field of plane electromagnetic wave in vacuum is represented by \(E_{x}=0\);
\(\overrightarrow {{E_y}} = 0.5\cos 2\pi \times {10^8}\left( {t - x/c} \right);\overrightarrow {{E_z}} = 0\)
What is the direction of propagation of electromagnetic waves?

1 Along \(y\)-direction
2 Along \(y\)-z direction
3 Along \(x\)-direction
4 Along \(x-z\) direction
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PHXI15:WAVES

358951 When light propagates through a material medium of relative permittivity \(\epsilon_{\mathrm{r}}\) and relative permeability \(\mu_{r}\), the velocity of light, \(v\) is given by: (c-velocity of light in vacuum)

1 \(v = {\rm{ }}\sqrt {\frac{{{\mu _r}}}{{{ \in _r}}}} \)
2 \(v = \sqrt {\frac{{{ \in _r}}}{{{\mu _r}}}} \)
3 \(v = \frac{c}{{\sqrt {{ \in _r}{\mu _r}} }}\)
4 \(v = c\)
NEET - 2022
PHXI15:WAVES

358952 A radio wave of frequency \(90\,MHz(FM)\) enters a ferrite rod. If \(\varepsilon_{\mathrm{r}}=10^{3}\) and \(\mu_{\mathrm{r}}=10\) then the velocity and wavelength of radio wave in ferrite are

1 \(3 \times {10^6}\;\,m{s^{ - 1}},3.33 \times {10^{ - 2}}\;\,m\)
2 \(3 \times {10^6}\;m{s^{ - 1}},3.33 \times {10^{ - 3}}\;m\)
3 \(3 \times {10^6}\;m{s^{ - 1}},3.33 \times {10^{ - 1}}\;m\)
4 None of these
PHXI15:WAVES

358953 Which of the following statement is false for the properties of electromagnetic waves?

1 The energy in electromagnetic wave is divided equally between electric and magnetic vectors.
2 These waves do not require any material medium for propagation.
3 Both electric and magnetic field vectors are parallel to each other and perpendicular to the direction of propagation of wave.
4 Both electric and magnetic field vectors attain the maxima and minima at the same place and same time.
PHXI15:WAVES

358954 The electric field of plane electromagnetic wave in vacuum is represented by \(E_{x}=0\);
\(\overrightarrow {{E_y}} = 0.5\cos 2\pi \times {10^8}\left( {t - x/c} \right);\overrightarrow {{E_z}} = 0\)
What is the direction of propagation of electromagnetic waves?

1 Along \(y\)-direction
2 Along \(y\)-z direction
3 Along \(x\)-direction
4 Along \(x-z\) direction
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PHXI15:WAVES

358951 When light propagates through a material medium of relative permittivity \(\epsilon_{\mathrm{r}}\) and relative permeability \(\mu_{r}\), the velocity of light, \(v\) is given by: (c-velocity of light in vacuum)

1 \(v = {\rm{ }}\sqrt {\frac{{{\mu _r}}}{{{ \in _r}}}} \)
2 \(v = \sqrt {\frac{{{ \in _r}}}{{{\mu _r}}}} \)
3 \(v = \frac{c}{{\sqrt {{ \in _r}{\mu _r}} }}\)
4 \(v = c\)
NEET - 2022
PHXI15:WAVES

358952 A radio wave of frequency \(90\,MHz(FM)\) enters a ferrite rod. If \(\varepsilon_{\mathrm{r}}=10^{3}\) and \(\mu_{\mathrm{r}}=10\) then the velocity and wavelength of radio wave in ferrite are

1 \(3 \times {10^6}\;\,m{s^{ - 1}},3.33 \times {10^{ - 2}}\;\,m\)
2 \(3 \times {10^6}\;m{s^{ - 1}},3.33 \times {10^{ - 3}}\;m\)
3 \(3 \times {10^6}\;m{s^{ - 1}},3.33 \times {10^{ - 1}}\;m\)
4 None of these
PHXI15:WAVES

358953 Which of the following statement is false for the properties of electromagnetic waves?

1 The energy in electromagnetic wave is divided equally between electric and magnetic vectors.
2 These waves do not require any material medium for propagation.
3 Both electric and magnetic field vectors are parallel to each other and perpendicular to the direction of propagation of wave.
4 Both electric and magnetic field vectors attain the maxima and minima at the same place and same time.
PHXI15:WAVES

358954 The electric field of plane electromagnetic wave in vacuum is represented by \(E_{x}=0\);
\(\overrightarrow {{E_y}} = 0.5\cos 2\pi \times {10^8}\left( {t - x/c} \right);\overrightarrow {{E_z}} = 0\)
What is the direction of propagation of electromagnetic waves?

1 Along \(y\)-direction
2 Along \(y\)-z direction
3 Along \(x\)-direction
4 Along \(x-z\) direction
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PHXI15:WAVES

358951 When light propagates through a material medium of relative permittivity \(\epsilon_{\mathrm{r}}\) and relative permeability \(\mu_{r}\), the velocity of light, \(v\) is given by: (c-velocity of light in vacuum)

1 \(v = {\rm{ }}\sqrt {\frac{{{\mu _r}}}{{{ \in _r}}}} \)
2 \(v = \sqrt {\frac{{{ \in _r}}}{{{\mu _r}}}} \)
3 \(v = \frac{c}{{\sqrt {{ \in _r}{\mu _r}} }}\)
4 \(v = c\)
NEET - 2022
PHXI15:WAVES

358952 A radio wave of frequency \(90\,MHz(FM)\) enters a ferrite rod. If \(\varepsilon_{\mathrm{r}}=10^{3}\) and \(\mu_{\mathrm{r}}=10\) then the velocity and wavelength of radio wave in ferrite are

1 \(3 \times {10^6}\;\,m{s^{ - 1}},3.33 \times {10^{ - 2}}\;\,m\)
2 \(3 \times {10^6}\;m{s^{ - 1}},3.33 \times {10^{ - 3}}\;m\)
3 \(3 \times {10^6}\;m{s^{ - 1}},3.33 \times {10^{ - 1}}\;m\)
4 None of these
PHXI15:WAVES

358953 Which of the following statement is false for the properties of electromagnetic waves?

1 The energy in electromagnetic wave is divided equally between electric and magnetic vectors.
2 These waves do not require any material medium for propagation.
3 Both electric and magnetic field vectors are parallel to each other and perpendicular to the direction of propagation of wave.
4 Both electric and magnetic field vectors attain the maxima and minima at the same place and same time.
PHXI15:WAVES

358954 The electric field of plane electromagnetic wave in vacuum is represented by \(E_{x}=0\);
\(\overrightarrow {{E_y}} = 0.5\cos 2\pi \times {10^8}\left( {t - x/c} \right);\overrightarrow {{E_z}} = 0\)
What is the direction of propagation of electromagnetic waves?

1 Along \(y\)-direction
2 Along \(y\)-z direction
3 Along \(x\)-direction
4 Along \(x-z\) direction